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#1
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Increasing DOF
What ways, other than decreasing aperture, are there to increase DOF?
Do large format cameras or huge lenses help? What about an extremely sensitive sensor or a bunch of strobes? Thanks, Ron |
#2
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Increasing DOF
wrote: What ways, other than decreasing aperture, are there to increase DOF? Do large format cameras or huge lenses help? What about an extremely sensitive sensor or a bunch of strobes? Look up "Scheimpflug" on google. It doesn't increase DOF, but it puts the DOF where you want it in some cases. David J. Littleboy Tokyo, Japan |
#3
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Increasing DOF
In article . com,
" wrote: What ways, other than decreasing aperture, are there to increase DOF? Do large format cameras or huge lenses help? What about an extremely sensitive sensor or a bunch of strobes? Sensor sensitivity has nothing to do with depth of field. More depth of field means a larger aperture. The physics remain the same regardless of the format of camera you use. |
#4
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Increasing DOF
David J. Littleboy wrote: wrote: What ways, other than decreasing aperture, are there to increase DOF? Do large format cameras or huge lenses help? What about an extremely sensitive sensor or a bunch of strobes? Look up "Scheimpflug" on google. It doesn't increase DOF, but it puts the DOF where you want it in some cases. David J. Littleboy Tokyo, Japan I am still processing the Scheimpflug principle but I have been thinking more about it and it seems like the trick lies in increasing the amount of parallel light striking the sensor. So a sensor with more surface area should increase DOF with a larger aperture. Or even a flash that emits coherent light. Is that correct? Thanks, Ron |
#5
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Increasing DOF
Shawn Hirn wrote: In article . com, " wrote: What ways, other than decreasing aperture, are there to increase DOF? Do large format cameras or huge lenses help? What about an extremely sensitive sensor or a bunch of strobes? Sensor sensitivity has nothing to do with depth of field. More depth of field means a larger aperture. The physics remain the same regardless of the format of camera you use. I agree that the sensitivity is not a factor but I am not convinced the format (sensor size) is not important. Thanks, Ron |
#6
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Increasing DOF
wrote: David J. Littleboy wrote: wrote: What ways, other than decreasing aperture, are there to increase DOF? Do large format cameras or huge lenses help? What about an extremely sensitive sensor or a bunch of strobes? Look up "Scheimpflug" on google. It doesn't increase DOF, but it puts the DOF where you want it in some cases. I am still processing the Scheimpflug principle but I have been thinking more about it and it seems like the trick lies in increasing the amount of parallel light striking the sensor. No. In a normal camera, the plane of focus is parallel to the film/sensor and stopping down simply increases the depth of that plane. When you Scheimplug, the plane of focus occurs at an angle to the film/sensor. At which point, if the subject _happens to lie_ in that angled plane, then you get the whole subject in focus despite it being at a range of distances from the camera. This only works for flat subjects, like sides of buildings or flat fields. David J. Littleboy Tokyo, Japan |
#7
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Increasing DOF
In article . com,
" wrote: What ways, other than decreasing aperture, are there to increase DOF? Do large format cameras or huge lenses help? What about an extremely sensitive sensor or a bunch of strobes? Thanks, Ron Shorter focal lengths. Shoot at 10mm and watch all the focus points light up at once. Unfortunately, people are going to complain that their portraits look like cartoon characters. An extremely sensitive sensor and strobes would let you close the aperture a lot more. |
#8
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Increasing DOF
David J. Littleboy wrote: No. In a normal camera, the plane of focus is parallel to the film/sensor and stopping down simply increases the depth of that plane. But isn't the increase in depth of plane a result of eliminating non-parallel light? |
#9
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Increasing DOF
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#10
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Increasing DOF
Kevin McMurtrie wrote:
In article . com, " wrote: What ways, other than decreasing aperture, are there to increase DOF? Do large format cameras or huge lenses help? What about an extremely sensitive sensor or a bunch of strobes? Shorter focal lengths. Shoot at 10mm and watch all the focus points light up at once. Unfortunately, people are going to complain that their portraits look like cartoon characters. An extremely sensitive sensor and strobes would let you close the aperture a lot more. This is why magazine ads look so sharp: All lighting is controlled. |
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